In react-beautiful-dnd example focused input don't swap

[gadiGuesty]

Are you submitting a bug report or a feature request?

Bug

What is the current behavior?

In react-beautiful-dnd example if few items created and one of inputs get focused and then dragged the it gets blurred and the swapped item get focused

1. create two items(or more) in react-beautiful-dnd example
2. choose one of the items and focus one of it's inputs
3. swap(drag) it with other item

What is the expected behavior?

dragged item persist focus

Sandbox Link

https://codesandbox.io/s/678pj?file=/index.js

What's your environment?

    "final-form-arrays": "^3.0.2",
    "react-final-form": "^6.3.5",
    "react-final-form-arrays": "^3.1.2",
    "react-beautiful-dnd": "^13.0.0",
    "react": "^16.13.0",
    "react": "^16.13.0",

Other information